Merge remote-tracking branch 'origin/develop' into develop

yangdelong

2021-05-30 4adfa4774e09f3b388335bb8dee5dea518856e5b

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export function createFlowLine (param) {
  const flowLine = window.L.polyline(param.points, param.option)
  flowLine.addTo(window.map)
  return flowLine
}
 
export function linkClear (linkClear) {
  if (this.linkClear != null) {
    this.linkClear.remove()
    this.linkClear = null
  }
}